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Call of Duty: Black Ops Cold War

Treyarch reverses some bans following Cold War Zombies Sail 630 Nuclear Bug

Treyarch have responded to Cold War Zombies players reports that they have been falsely banned after receiving the ‘Sail 630 Nuclear Bug.’

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Cold War Zombies Sail 630 Nuclear Bug

Treyarch have responded to reports of Black Ops Cold War Zombies players receiving the ‘Sail 630 Nuclear Bug’ error code and having their accounts permanently banned afterward.

In a new update on April 16 on Reddit, Treyarch Community Manager has stated that they investigated the issue even further and have identified a number of bans caused by this bug that will be reversed.

He states that not all bans have been reversed, as some very in fact legitimate bans in the mode, but many have after a security enforcement review.

Foxhound commented on a Reddit post with the latest statement from the studio:

Hello! The Sail 630 Nuclear Bug notice is indeed a disconnect message as previously shared and now noted by your peers. If you are disconnected mid-match, this error has the potential to show up.

We have an update to share: recent account enforcements have been reviewed and, where appropriate, accounts believed to be operating in good faith have been restored. Accounts that included additional flags for exploits will retain their enforcement.

As always, we encourage everyone to enjoy Zombies on PC within the terms of service.

He followed up further after a user commented asking why they decided to “lie” initially. Foxy replied that he provided the latest information he had at the time, but after further investigations things changed.

We’ve always relayed the most recent information available at the time of postings. According to the data available to us, accounts that have retained their enforcement are verified to have broken the Call of Duty: Black Ops Cold War Security and Enforcement Policy. Accounts believed to be operating in good faith have been restored.

He also reiterated that PC players are “safe” to continue playing Zombies in Black Ops Cold War.

As we mentioned above, you’re safe to enjoy Zombies on PC within the terms of service. No worries about going for high rounds!

Original Story:

In the early days of Black Ops Cold War, Zombies players were having their World Record runs abruptly ended by consistent crashes. Now, a new error code has been kicking Zombies players back to the menu, and they claim their accounts are permanently banned when they log back on.

Since April 2nd, the ‘Sail 630 Nuclear Bug’ has been crashing PC players’ Zombies games when they’re on high levels. Reddit user Korlesa was allegedly banned after receiving this code and posted to the CODZombies subreddit to highlight the issue.

BOCW Zombies Outbreak mode

In the post titled, “People are being falsely banned while going for high rounds in Zombies on PC,” Korlesa described how “after going 50+ rounds people are receiving a “Sail 630 Nuclear Bug” Error. Upon exiting to Battle.net we see that we have been permanently banned.”

Before the post was locked, to back up their claim, Korlesa compiled over 70 posts to the Activision Support page in which players reported they had been falsely banned after receiving the Sail 630 Nuclear Bug.

Korlesa summed up these reports highlighting what the majority of them had in common:

  • They were on PC
  • They were playing Zombies
  • They were on a high round (50+)
  • They received the same error (Sail 630 Nuclear Bug)

Treyarch’s Community Manager, Josh Torres, aka FoxhoundFPS, replied to the Reddit post. “I’m unable to assist with this issue,” he said. “All infractions undergo a thorough review process by the security team before enforcement.”

Black Ops Cold War Zombies

However, the original post and the CODZombies subreddit continued to be flooded with players reporting the issue and worrying if they’re safe to play. After a concerned Zombies fan asked if they should avoid playing the game until the issue has been fixed, FoxhoundFPS replied with a full statement.

We are aware that some players are seeing the Sail 630 Nuclear Bug message and then are unable to connect while seeing a ban message. The ban message is not a product of disconnect errors. For questions about enforcement policies, please visit this link.

I’ve spoken with our teams regarding the recent Sail 630 Nuclear Bug threads and reports, and here’s what I have to share.

Sail 630 Nuclear Bug: This error string is currently presented instead of the standard disconnect language when a disconnect occurs in the Zombies menus on PC. PC players would typically see, “Connection to the Blizzard game server has been lost. Please exit and try again. BLZBNTBGS000003F8.”

We encourage players to continue playing Zombies as per usual, which includes chasing high-rounds and personal bests.

After another user asked if players who have been banned after seeing the error message will get their accounts back, FoxhoundFPS reiterated his statement.

I stated in my post that the bans are not the result of the disconnect or the disconnect error. The recent enforcements are not bugs or errors.

Players that experience disconnects are not subject to enforcement unless they are violating the Call of Duty: Black Ops Cold War Security and Enforcement Policy. As I have always stated, all infractions undergo a thorough review process by the security team before enforcement.

Players are able, and encouraged, to maintain or resume normal Zombies gameplay.

To summarize, Torres passed on players’ concerns to the security team, who then said that the Sail 630 Nuclear Bug is a standard error message unrelated to player bans.

Image Credit: Activision

Call of Duty: Black Ops Cold War

How to unlock the Sai in Warzone & Black Ops Cold War

Here’s how to unlock the Sai melee weapon in Call of Duty: Warzone and Cold War during The Numbers Event in Season 5 Reloaded.

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call of duty sai in warzone and black ops cold war

A new melee weapon called the Sai is now available for players to earn in Warzone and Cold War as a part of Season 5 Reloaded’s The Numbers event.

Season 5 Reloaded brought a ton of free content to Cold War Multiplayer and Zombies and Warzone. This included new maps and multiplayer modes and also a new Zombie region.

Players can also enjoy events in Outbreak, Black Ops Cold War, and Warzone. The Warzone & Black Ops Cold War The Numbers event allows players to unlock a new melee weapon.

The Numbers Event is currently taking place in Cold War and Warzone. It started on September 21 at 10 AM PT. This event will reward players with exclusive cosmetic items as well as XP. But the limited-time challenges hold the best reward, which is the Sai.

Kitsune Operator using the Sai in Black Ops Cold war

How to unlock the Sai in Warzone and Cold War

To unlock the Sai in Warzone and Cold War, players will have to complete a full set of The Numbers challenges in either game. There are 9 challenges in both games, with 18 challenges total.

However, players can only unlock the Sai in Warzone and Cold War by completing a full set of challenges. You cannot unlock the Sai by completing 9 challenges from both games.

The Sai in Warzone and Cold War is a dual-wield melee weapon and the first-ever event reward weapon. It is one of 19 rewards players can earn during the event. Other rewards include stickers, charms, calling cards, and XP.

The Numbers Event in Warzone and Black Ops Cold War

All 9 challenges require players to interact with Mobile Broadcast Stations dotted around the map. These trucks have been placed by Perseus in different parts of Verdansk. Investigating unique Mobile Broadcast Stations will complete the nine challenges and allow you to unlock the Sai in Warzone and Cold War.

You can find all of the Warzone and Cold War The Numbers event challenges below:

Warzone

  • In Warzone, activate or listen to the Mobile Broadcast station northwest of the Military Base
  • In Warzone, activate or listen to the Mobile Broadcast station south of the Port
  • In Warzone, activate or listen to the Mobile Broadcast station north of the Airport
  • In Warzone, activate or listen to the Mobile Broadcast station west of the Train Station
  • In Warzone, activate or listen to the Mobile Broadcast station between the Boneyard and Superstore
  • In Warzone, activate or listen to the Mobile Broadcast station east of the Salt Mine
  • In Warzone, activate or listen to the Mobile Broadcast station at the Farmland
  • In Warzone, activate or listen to the Mobile Broadcast station at the Hills
  • In Warzone, activate or listen to the Mobile Broadcast station southwest of the TV Station

Black Ops Cold War

  • Complete 3 Multiplayer matches on Zoo or earn Objective Milestones in Outbreak Survival
  • Win a Multiplayer Demolition match or earn 2 or more Zombies Round or Objective Milestones and Exfil successfully
  • Get a total of 50 Eliminations in Multiplayer or Slaughter Medals in Zombies (killed 5 enemies rapidly)
  • Get 10 kills with Lethal Equipment in Multiplayer or earn Lethal Equipment multi kill medals in Zombies
  • Earn 25000 total Multiplayer Score or Zombies Essence
  • Get 3 Multiplayer kills without dying or recover 500 health with food items in a region of Outbreak Survival 3 times
  • Get 5 kills with Scorestreaks in Multiplayer or earn Support multi kill medals in Zombies
  • Get 5 kills with or assisted by your Field Upgrades in Multiplayer or earn Field Upgrade multi kill Medals in Zombies
  • Earn 3 multi kills in Multiplayer or Eliminate Elite enemies in Zombies

How to get Warzone and Cold War Spectral Sai bundle Tri Chroma blueprint

Warzone Black Ops Cold War Spectral Sai Bundle

Players can also unlock the Sai in Warzone and Cold War by purchasing the Spectral Sai bundle in the Call of Duty store, which will automatically unlock the Tri Chroma blueprint for the melee weapon.

A blog post on the Call of Duty website claims, “The Sai’s lightweight design allows for improved agility and fast attacks, which is great for taking out zombies or the competition in Multiplayer and Warzone.

For more Call of Duty: Warzone, check out how to open the secret yellow door on Rebirth Island, and stay tuned for future news and guides.

Image credits: Activision

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Call of Duty: Black Ops Cold War

Warzone & Cold War The Numbers event: Challenges & rewards

Warzone and Cold War’s plot will thicken with Season 5 Reloaded’s The Numbers event, so here’s how to earn the exclusive rewards.

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The Numbers event in Cold War and Warzone

Following Warzone and Cold War Season 5 Reloaded, ‘The Numbers’ event will arrive, which is expected to continue the mystery of the Red Doors and Numbers Program. Here’s everything we know about the event, including its start date, challenges, and rewards.

Mysterious Red Doors appeared in Verdansk at the launch of Season 4, teleporting players to rooms filled with high-tier loot and Killstreaks. These doors started behaving more erratically in Season 5, bringing players to a mysterious corridor, dropping them from the sky, and even disappearing.

The new season also added mysterious mobile broadcast stations around Verdansk, and now with the Warzone and Cold War The Numbers event live, the community may get some answers regarding the Red Doors and mobile broadcast stations during Season 5 Reloaded.

Here’s when the event will begin, its challenges, and the exclusive rewards you can earn.

What is Warzone Season 5’s The Numbers event?

Warzone player entering Red Door

Warzone Season 5 brought Mobile Broadcast Stations to Verdansk. These were relatively inactive at the start of the season but “seem to be stirring.” They’ll soon begin “amplifying the ‘Dragovich Program’ tapes – A.K.A. the Numbers broadcasts – across the region.”

For this event, players will need to investigate these Broadcast Stations and will earn a pile of rewards for doing so.

Warzone Season 5 The Numbers event start and end date

Warzone Season 5 Reloaded Roadmap

As part of the Season 5 Reloaded announcement, Call of Duty devs revealed that the event kicked off on September 21 at 10 AM PT / 1 PM ET / 6 PM BST and will end on October 5 at 9 PM PT/ 11 PM CT/ 12 PM ET / 5 AM BST (October 6) in Black Ops Cold War.

The Numbers event will conclude in Warzone on October 6 at 9 PM PST/ 11 PM CST/ 12 PM EST / 5 AM BST (October 7)

This event arrived a little under two weeks after the Season 5 Reloaded updates that brought a new Warzone game mode and a ton of Zombies content to Cold War.

Warzone and Cold War The Numbers event challenges

Kitsune fighting at Warzone Season 5 mobile broadcast station

This is a seasonal event. There are nine challenges to complete in both Warzone and Cold War to earn exclusive rewards. Devs revealed that in Warzone, you must activate the Mobile Broadcast Stations, and the more you activate, the more rewards you’ll earn.

Also, as an in-game incentive to visit these Stations, you’ll get “An instant $5,000 Cash bonus in the current match” that you can spend on Loadouts, Killstreaks, or anything else to help you secure the win.

You can find all of the Warzone and Cold War The Numbers event challenges below:

Warzone

  • In Warzone, activate or listen to the Mobile Broadcast station northwest of the Military Base
  • In Warzone, activate or listen to the Mobile Broadcast station south of the Port
  • In Warzone, activate or listen to the Mobile Broadcast station north of the Airport
  • In Warzone, activate or listen to the Mobile Broadcast station west of the Train Station
  • In Warzone, activate or listen to the Mobile Broadcast station between the Boneyard and Superstore
  • In Warzone, activate or listen to the Mobile Broadcast station east of the Salt Mine
  • In Warzone, activate or listen to the Mobile Broadcast station at the Farmland
  • In Warzone, activate or listen to the Mobile Broadcast station at the Hills
  • In Warzone, activate or listen to the Mobile Broadcast station southwest of the TV Station
warzone black ops cold war the numbers event

Black Ops Cold War

  • Complete 3 Multiplayer matches on Zoo or earn Objective Milestones in Outbreak Survival
  • Win a Multiplayer Demolition match or earn 2 or more Zombies Round or Objective Milestones and Exfil successfully
  • Get a total of 50 Eliminations in Multiplayer or Slaughter Medals in Zombies (killed 5 enemies rapidly)
  • Get 10 kills with Lethal Equipment in Multiplayer or earn Lethal Equipment multi kill medals in Zombies
  • Earn 25000 total Multiplayer Score or Zombies Essence
  • Get 3 Multiplayer kills without dying or recover 500 health with food items in a region of Outbreak Survival 3 times
  • Get 5 kills with Scorestreaks in Multiplayer or earn Support multi kill medals in Zombies
  • Get 5 kills with or assisted by your Field Upgrades in Multiplayer or earn Field Upgrade multi kill Medals in Zombies
  • Earn 3 multi kills in Multiplayer or Eliminate Elite enemies in Zombies

Warzone and Cold War The Numbers event rewards

You can find all of the Warzone and Cold War The Numbers event rewards that are now available for players to earn by completing the challenges above below:

Warzone

Warzone The Numbers Event Rewards

Black Ops Cold War

Black Ops Cold War The Numbers Event Rewards

And for completing all nine The Numbers challenges in either Warzone or Cold War, you’ll unlock the Sai melee weapon. This is a dual-wield weapon that “allows for improved agility and fast attacks.”

That’s all we know about Warzone Season 5’s The Numbers event, but stay tuned to Charlie INTEL for all updates.

Also, check out all of the game-changing weapon buffs and nerfs in Warzone Season 5 Reloaded.

Image Credit: Activision

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Call of Duty: Black Ops Cold War

Best quickscoping loadout for CoD: Cold War Season 5

Quickscoping is one of the most fun ways to play CoD, so here’s everything you need to know to quickscope in Black Ops Cold War Season 5.

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Cold War quickscoping class

To master the art of quickscoping in CoD: Black Ops Cold War Season 5, equip our best Swiss K31 loadout with attachments, Perks, and equipment.

There’s no better way to flex your CoD skill in a final killcam than hitting a nasty three-piece with a Sniper Rifle. Quickscoping montages are how some of Call of Duty’s biggest brands such as OpTic and FaZe had their start, after all.

Sniper flinch was added with the Season 3 update, but even in Season 5 of Black Ops Cold War, players are still convinced it’s not nerfed it enough. Sniping, in particular, quickscoping is perfectly viable and players love to do it.

Black Ops Cold War Season 5 has plenty of maps and opportunities for snipers to dominate, so here are the best weapon, attachments, and Perks to quickscope in Black Ops Cold War.

Best Swiss K31 Cold War quickscoping attachments

Stitch quickscoping Cold War
  • Barrel: 24.9″ Tiger Team
  • Body: Tiger Team Spotlight
  • Magazine: 8 Rnd Mag
  • Handle: Serpent Wrap
  • Stock: Raider Pad

When quickscoping in Black Ops Cold War, you want to run the Swiss K31 as the weapon is practically handcrafted for quickscoping.

This Swiss K31 is built exclusively for speed, allowing you to take out multiple targets in quick succession. Aim for the chest while quickscoping with this loadout as it’s an easier target to hit, and it will guarantee you a one-shot kill at almost any range.

The 24.9″ Tiger Team vastly improves in the Swiss K31 in almost every way. Before you unlock this barrel, you’ll land a lot of hit markers, but after equipping it you’ll have no problem getting One Shot, One Kill medals. You’ll find your K31 does more damage, fires faster, reloads quicker, and is more accurate.

BOCW Swiss K31

You need your reaction time to be at a maximum while quickscoping, so you can’t take the second to decide if you really did see the enemy. The Tiger Team Spotlight will mark enemies for you, increasing your awareness and reactions in the process.

To hit multiple shots in quick succession, you want to go for a bigger magazine. The 8 Rnd Mag is perfect as you have more than enough shots to take out the other team in 6v6 game modes without any major downsides. However, you should bear in mind that the Tiger Team barrel will reduce the mag size to six shots.

To further increase the Swiss K31’s speed, you want to add the Serpent Wrap and Raider Pad. Together, these attachments will vastly increase your ADS and sprint to fire time, hitting your shots before the enemy can take you out.

Best Perks & Equipment for quickscoping in Cold War Season 5

Black Ops Cold War Tactical Mask perk

Best Perks

  • Perk 1: Tactical Mask / Flak Jacket
  • Perk 2: Scavenger / Assassin
  • Perk 3: Gung-Ho / Ghost

The one weapon class that suffers from Stun Grenades and other equipment with disorientating effects is Sniper Rifles. So the Tactical Mask will help make you immune to their effects. Also, you still might try to hold down the odd location or two, which means you’ll be peppered with explosives – so equip Flak Jacket to sort that out.

You don’t get that much ammo with a Sniper Rifle, so Scavenger will help you to stock up, and then you can use it to kill Assassin targets to increase your potential points accumulation.

Gung-Ho will allow you to reload while sprinting, as well as change weapons faster, in case you run out of ammo for the Swiss. Whereas Ghost is a tried and tested Perk that will keep your position on the map a bit more secure.

Best Equipment

players fighting in zoo map in cold war
  • Lethal: Tomahawk
  • Tactical: Stimshot
  • Field Upgrade: Field Mic

Quickscoping in Call of Duty is all about taking down your opponents in style, and there’s nothing more stylish than closing out the Best Play killcam than an awesome Tomahawk throw.

For your Tactical, the Stimshot is always a solid choice, allowing you to quickly get back your health to re-peek for a second quickscope shot. And finally, to get the most information possible, the Field Mic will reveal the position of all nearby enemies, giving you plenty of time to prepare for the shot.

How to unlock the Swiss K31 in Black Ops Cold War

Black Ops Cold War quickscoping Swiss K31

The Swiss K31 can no longer be unlocked through the Battle Pass as that was tied to the Season 3 Battle Pass.

However, if you haven’t acquired it yet, then you will need to meet the following requirements to unlock it now:

  • Black Ops Cold War Multiplayer/Warzone: Using Sniper Rifles, get 2 Headshot kills in 15 different completed matches.
  • Black Ops Cold War Zombies: Using Sniper Rifles, kill 5 or more enemies with Critical Kills rapidly 100 times.

Best alternatives to the Swiss K31 in Cold War

If you haven’t unlocked the Swiss K31 yet, or it isn’t working out for you, then you can try some of CoD: Cold War’s other best Sniper Rifles instead. The Pelington 703 is the next best thing, or you can choose the very popular LW3 Tundra for extra damage.


If you want to see what the best Black Ops Cold War guns are, and find your new favorite, you can check out our ranking and tier of every Cold War weapon.

Also, keep up-to-date with all the latest news and guides for Call of Duty: Vanguard.

Image Credit: Activision / Treyarch

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